Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ddd7c76d8d17f5…

MALICIOUS

PDF

47.3 KB Created: 2020-10-26 17:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c0ca6f15f4cb8264d5525ebd4837d39 SHA-1: f22266a615bd678dcd8c430a9b296b2412387c1b SHA-256: 44ddd7c76d8d17f51104d7e2ef047c4fb2c53f5a568013d80a70f9b05ef9d8d7
174 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic, indicating a lure to a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://cctraff.ru/aws?keyword=broiler+poultry+production+manual+pdf
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.pdf
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdf
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/kasedabuzoli-givaraloga-rewolilopel-xavimaninevobu.pdf
    • https://buritovetozew.weebly.com/uploads/1/3/4/4/134486370/lekewarolulopu-siwizoxi-kisomane-jolufoti.pdf
    • https://somanenor.weebly.com/uploads/1/3/4/4/134472611/4ac0b2ad773.pdf
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/ruxaju_kufogepax.pdf
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/fedodanotiko_kesokozerekiwuv_gozobaruz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tadovu/rixuvatajukona.pdf
    • https://s3.amazonaws.com/julaxel/weldability_of_nickel_alloys.pdf
    • https://s3.amazonaws.com/leguvefu/rumugefukulaluka.pdf
    • https://s3.amazonaws.com/felasorarabipis/74295369215.pdf
    • https://s3.amazonaws.com/dujepav/nutopetanefav.pdf
    • https://s3.amazonaws.com/zuxadol/84911115794.pdf
    • https://s3.amazonaws.com/babuxufarizuxur/rrb_je_previous_year_question_paper_download.pdf
    • https://uploads.strikinglycdn.com/files/ff792bf3-aa87-48cd-bcb8-dc1d16fb14c8/49245063625.pdf
    • https://uploads.strikinglycdn.com/files/75e45c69-b5ca-48f7-bb55-2a3620deb71e/36174518210.pdf
    • https://s3.amazonaws.com/jasadavebaga/jubazodazirowozipoguridom.pdf
    • https://s3.amazonaws.com/fasanag/72717949233.pdf
    • https://s3.amazonaws.com/sugowubuf/best_programs_for_windows_10.pdf
    • https://s3.amazonaws.com/tuzakifezara/rutepozofuzudofumov.pdf
    • https://s3.amazonaws.com/bulozor/candy_em_word.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ac9.bin
511f0db0b07d06dc381c5c9c27c27351c67f7162afb4251b8e42f34244158a6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC9 5156 bytes
font_01_sfnt_off00007c3d.bin
59fc879bd31be70ca07ba4e4cc7642cf7ff53cffac17ac537b81494c9484484e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3D 10956 bytes
font_02_sfnt_off0000a17c.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA17C 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.