Malicious PDF — malware analysis report

Static analysis result for SHA-256 66fd2611e8c1f2b7…

MALICIOUS

PDF

73.0 KB Created: 2020-08-14 08:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1950837fb9eb75c02cff1b3ec8f008e7 SHA-1: fea5a31df820695fce2efcc82250accb77f04fed SHA-256: 66fd2611e8c1f2b71bdfc5d0f5ec2016377bac5dcb73a12195b1c8614566216a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure related to an Adobe Photoshop Elements manual, but it embeds a link to a known malicious redirector. The document body is heavily obfuscated, but the embedded URL and the heuristic firings strongly suggest a phishing or redirection attempt. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=adobe+photoshop+elements+8+manual
    • http://files.christakisbar.com/uploads/1/3/1/0/131071151/3328153.pdf
    • http://files.soapbarlounge.com/uploads/1/3/0/7/130776718/luriza_bokitewakikizu_sepipe.pdf
    • http://boxixavim.svelks.org/uploads/1/3/1/0/131070161/6999869.pdf
    • http://files.alisonlmiller.com/uploads/1/3/0/7/130739343/tuweralowoze-vunipevuxezede-tepemewikigi-fatavodanixabij.pdf
    • http://files.macklandscapemanagement.com/uploads/1/3/2/7/132740852/1361226.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8099/7269/files/molybdenum_properties.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/91583328887.pdf
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/c_al_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/85594125531.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/cascada_de_coagulacion.pdf
    • https://cdn.shopify.com/s/files/1/0433/8748/6358/files/jisoguvasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/the_hermetic_tarot.pdf
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/josopowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1189/files/lakepoduponejepiwozosoti.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0a6.bin
64d42627115783978c1308f5a37b1a123416a91c4b2b615c0808b03c1adecca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A6 5424 bytes
font_01_sfnt_off0000f2ef.bin
a1f3eb140ab7180c6ae3bebb0371db99a69e58e07818e04a1e6361340fe7b72e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EF 10476 bytes

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