Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d53b5459b4c23bf…

MALICIOUS

PDF

51.5 KB Created: 2020-08-14 01:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 546c2cf10268fc0d44e81e3fb8082057 SHA-1: dd401c92181b3528ede058c266923a0dbb10803d SHA-256: 2d53b5459b4c23bf7765ae07a65cba6ad14870071ef36d9c574e23effce9a214
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=scratch+3.+0+free++for+windows+7`. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of many other PDF links, some hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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.ru/pify?keyword=scratch+3.+0+free++for+windows+7 In PDF document text
    • http://files.my-tbl.com/uploads/1/3/1/3/131380390/komovexazed_kebobigegel_ganodi.pdfIn PDF document text
    • http://files.owius.org/uploads/1/3/0/7/130740374/kugajudujuz.pdfIn PDF document text
    • http://files.ishairimmer.com/uploads/1/3/1/8/131856290/738984.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/15036306670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1247/0422/files/valedictory_speech_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/kekijubiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5974/7745/files/sidefidakijanij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/sports_vocabulary_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/lawesixozuganajeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/vunikatewujojaloxupes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0586/9213/files/gutubedizodomononefap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4869/6993/files/axis_and_allies_1940_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/badunujinudukewurokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/beyond_meat_ipo_performance.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58A8 3028 bytes
SHA-256: 02daa5edc13110647fffeb01328f5cd5e6355e7ce7e4967d1cb83abff42e5da6
font_01_sfnt_off00006363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6363 5692 bytes
SHA-256: 8927d98052ed589d014ed20880d36f51dc64680f70c639242fabdd801097b516
font_02_sfnt_off000076c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C5 5804 bytes
SHA-256: c826afd5e5a63347f007c9e996462aff83034285a4ad5644e67f552e1eed9473
font_03_sfnt_off0000855c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855C 10952 bytes
SHA-256: 6674e9d980f99281647a821244449a2b09cad98daa5c35356b6a382445f71d2c
font_04_sfnt_off0000ab21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB21 16168 bytes
SHA-256: 22c3ba09e8cf1325a54e3cd3bb657ff99244ae793782a272ee343ac892b84c01