Malicious PDF — malware analysis report

Static analysis result for SHA-256 8560e771679e7dd5…

MALICIOUS

PDF

43.6 KB Created: 2020-08-01 12:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec4e4f34031cbec680116b43d1344847 SHA-1: a432f92491311d0eb0ab3e62762a28d729d5e685 SHA-256: 8560e771679e7dd5cb37d7974593c77dd62e3f84dfb7b450f813225e010fd222
154 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body and embedded link structures reveal a large number of external URLs, many hosted on cdn.shopify.com, suggesting a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=wow+arcane+mage+artifact.

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.cc/pify?keyword=wow+arcane+mage+artifact
    • http://files.oneglobalclassroom.com/uploads/1/3/1/3/131381376/bizukefez.pdf
    • http://files.savethesmile.org/uploads/1/3/1/3/131380120/5f36e3d30d5a2c.pdf
    • http://files.ncscja.org/uploads/1/3/2/6/132681560/xesavuweso.pdf
    • http://files.steviesays.com/uploads/1/3/1/6/131606965/toxeruxudutaru-xefajofegesite-govawujigalore.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/1550051699.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1553/files/xegizobigoxawet.pdf
    • https://cdn.shopify.com/s/files/1/0436/8426/6137/files/16149017016.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41326774972.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3212/files/nazud.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/33348984288.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47948794002.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texigusowemojegovivek.pdf
    • https://cdn.shopify.com/s/files/1/0431/8294/8506/files/munak.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/temubamomozedaxibuko.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3077/files/tinufigupu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ff6.bin
8edc6f5c4ca32ff54a395367966a32e23332c73fd69efeee58f33f3dd594e421		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF6 4884 bytes
font_01_sfnt_off00007088.bin
e71d710b60ea32fb9f3660a10b1bfefef571e141b639e9ca1a6af3c555f14d5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 10312 bytes
font_02_sfnt_off00009398.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9398 4324 bytes

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