Malicious PDF — malware analysis report

Static analysis result for SHA-256 c913eecddd6bcd21…

MALICIOUS

PDF

68.7 KB Created: 2020-08-21 08:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cec1e2c2cc9db3e8ee0e9bb16bacb87 SHA-1: 3de5f9f2ca793ac8cd17275686a82c619e21e2af SHA-256: c913eecddd6bcd21c87e54771c30f2a2dda39869a8c265050b53c69013cb3b10
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is also present in the document body. This indicates the PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=android+studio+adb+integration In PDF document text
    • http://files.sjetr.org/uploads/1/3/1/4/131406286/166345.pdfIn PDF document text
    • http://pirur.marthomawashington.com/uploads/1/3/1/4/131437792/9214208.pdfIn PDF document text
    • http://files.runamokfarm.com/uploads/1/3/0/9/130969607/bobavejuwo.pdfIn PDF document text
    • http://files.alliesonthejourney.net/uploads/1/3/2/3/132302963/4970213.pdfIn PDF document text
    • http://files.delhicommunitychurch.com/uploads/1/3/1/8/131856956/juxajene-javoxogofiw-badujikegaliz-sopokafag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/gosavofakatorelijusolix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/11762038386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6211/7020/files/ion_creanga_capra_cu_trei_iezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/zovot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1284/8790/files/nidoxefomidutafisexona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/senaradazomepavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/autohotkey_zip_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/rosonezivazanujoxomidap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/39885135330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/how_to_analyze_large_data_sets_in_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1313/5774/files/29603663232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6700/7386/files/writing_task_2_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0008/5149/files/esl_beginner_conversation_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kawovuk.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC21 4972 bytes
SHA-256: 9f1ace246a5aa26ec2307975dfe4851b3d002e981d165e77f06a00269888dbde
font_01_sfnt_off0000cd08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD08 13288 bytes
SHA-256: 2704bede6c9e90d67e92f71fffb24216cb058ddfa4088648827d604e78a0ff3c
font_02_sfnt_off0000f75b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e