Malicious PDF — malware analysis report

Static analysis result for SHA-256 34916dac0f2d43a4…

MALICIOUS

PDF

55.3 KB Created: 2020-08-09 07:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2e7e9b271ece096e8f9c4f36cc5c70c SHA-1: b8b1bbc5ac49a30d06a21ed541cb49124efdc236 SHA-256: 34916dac0f2d43a405c27ffb4f0b424aa4c34224c20068b9c1261d0617b398b9
152 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.com, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the same URLs, reinforcing the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=como+configurar+un+servidor+web+pdf
    • http://files.friendsofmaxx.com/uploads/1/3/1/4/131407898/xepunumetuz_pamukel.pdf
    • http://vusog.nationalparkswithkids.com/uploads/1/3/1/1/131163590/novexuvesap-titubazojedor-jimoxenolaf-mogewupu.pdf
    • http://files.okohstudio.com/uploads/1/3/2/6/132696194/gijilusuxikive_dixunixoxaguru_xapevizi_dowuxuk.pdf
    • http://voguvumit.cultureandmovement.com/uploads/1/3/0/7/130775732/lireroxadeboxali.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/pdf_to_word_converter_free_download_for_windows_7_ultimate.pdf
    • https://cdn.shopify.com/s/files/1/0446/6376/7203/files/10017354175.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/98826474730.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/49577951055.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0583/files/gurixifemosojimibebafi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/69876040756.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/popavuzawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9604/6752/files/mesoxuvemeperupejulum.pdf
    • https://cdn.shopify.com/s/files/1/0434/5672/5153/files/25309635050.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/how_to_link_youtube_to_discord.pdf
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/xodijajetinixanem.pdf
    • https://cdn.shopify.com/s/files/1/0433/5019/6389/files/63149304969.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000712b.bin
242387bc40d12ad70e6940d554f68644308839b895c9664d5ff35ad668e3f8e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712B 5560 bytes
font_01_sfnt_off00008404.bin
d0a887b73566272dcfbdce63efb737a0bf4032f5b8b222d22b579c92285017ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8404 12248 bytes
font_02_sfnt_off0000aa90.bin
f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA90 16144 bytes
font_03_sfnt_off0000bf91.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF91 4324 bytes

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